If you are writing a technical paper, using version 5.x (released circa 2009-2010) is not recommended because it is obsolete. Modern versions (8.x) include features critical for deep analysis:
Before you initiate any process, ensure your system meets these requirements: If you are writing a technical paper, using version 5
Cisco Packet Tracer 5.1 is a cross-platform network simulation tool designed by Cisco Systems to help learners visualize complex networking concepts. Unlike hardware-based labs, it uses a simplified "model" of network behavior to allow users to build, configure, and troubleshoot virtual topologies without the risk or cost of physical equipment. Key Features of Version 5.1 If you are writing a technical paper, using version 5